A hormone called FGF21 can reverse obesity in mice by activating a newly identified brain circuit tied to metabolism. Surprisingly, it works in the hindbrain—the same region targeted by GLP-1 drugs ...

Scientists have discovered that a protein linked to cell death is secretly driving the aging of blood stem cells in a ...

Researchers have found a way to make cancer-killing immune cells more powerful and precise. By adding specific signaling components, they boosted the cells’ readiness to attack tumors. Surprisingly, ...

The ozone layer has been on track to recover thanks to the Montreal Protocol—but a loophole may be holding it back. Chemicals ...

A rogue set of “zombie” immune cells may be driving aging and fatty liver disease by flooding tissues with inflammation.

Researchers have discovered lithium hidden in pyrite within ancient shale rocks—an unexpected find that could reshape how we ...

New research suggests that aiming for a lower blood pressure target may deliver bigger heart health benefits than previously thought. Using large datasets and simulation models, scientists found that ...

Scientists have discovered that methane in the open ocean is produced by microbes under nutrient-poor conditions, solving a ...

A massive, nearly 20-year study tracking over 650,000 Americans with irritable bowel syndrome is raising new questions about the long-term safety of common treatments. Researchers found that some ...

A massive Swedish study shows that AI can spot people at higher risk of melanoma using routine health data. Advanced models ...

A massive, bus-sized “terror croc” that once preyed on dinosaurs has been brought back to life in stunning detail with the ...

A lifetime of mental stimulation—like reading, writing, and learning new skills—may help protect the brain as we age. People ...